Ruby初心者が選ぶRuby入門書3選 / kzrb #76 LT1

by shiget 84

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3VCZॳ৺ऀ͕ બͿ 3VCZೖ໳ॻબ TIJHFU L[SCNFFUVQ TIJHFU

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͜Μʹͪ͸

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͛ͬ͠ͱ ,BOB[BXBSCߴઐΧϯϑΝϨϯε <ߴઐ><ઐ߈Պ><+"*45><ԣ඿><๺཮>

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೥݄ੜ·Ε ೥݄෱Ҫߴઐిࢠ৘ใ޻ֶՊଔۀʢߴߍʴ୹େʣ ೥݄෋ࢁ঎ધߴઐઐ߈Պमྃʢେଔͱಉ౳ʣ ೥݄๺཮ઌ୺Պֶٕज़େֶӃେֶ ɹɹɹɹɹɹ৘ใՊֶݚڀՊത࢜લظ՝ఔमྃ ೥݄̐෋ࢁʹຊ͕ࣾ͋Δձࣾʹ৽ଔೖࣾ ೥݄ԣ඿ʹ͋Δࣄۀॴʹ഑ଐ ೥݄సۈͰେࡕۈ຿։࢝ ೥݄సۈͰԣ඿ʹ෮ؼ ೥݄Ұ਎্ͷ౎߹ʹΑΓୀ৬ ೥݄ʙ݄ແ৬ ೥݄౦ژʹຊ͕ࣾ͋Δձࣾʹస৬ ݱࡏʹࢸΔ

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ΑΖ͘͠ ͓ئ͍ ͠·͢

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3VCZॳ৺ऀ͕ બͿ 3VCZೖ໳ॻબ TIJHFU

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೥݄ੜ·Ε ೥݄෱Ҫߴઐʢ$ +BWBʣ ೥݄෋ࢁ঎ધߴઐઐ߈Պʢ$ʣ ೥݄๺཮ઌ୺Պֶٕज़େֶӃେֶʢ$ $ʣ ɹɹɹɹɹɹ৘ใՊֶݚڀՊത࢜લظ՝ఔमྃ ೥݄̐෋ࢁʹຊ͕ࣾ͋Δձࣾʹ৽ଔೖࣾ ೥݄ԣ඿ʹ͋Δࣄۀॴʹ഑ଐʢ1FSM +BWBʣ ೥݄సۈͰେࡕۈ຿։࢝ʢ৘γεʣ ೥݄సۈͰԣ඿ʹ෮ؼʢ؅ཧ &YDFM +BWBʣ ೥݄Ұ਎্ͷ౎߹ʹΑΓୀ৬ ೥݄ʙ݄ແ৬ ೥݄స৬ʢ+BWB (PMBOHʣ

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Զͱ3VCZ

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೥+"*45ݚڀࣨͷઌഐ͕ར༻ ೥LPTFODPOGελοϑ 3VCZ,BJHJք۾ͷਓ͕ଟ਺ ೥ࡳຈ3VCZձٞࢀՃ ೥3VCZ,BJHJ౰೔ελοϑ ೥3BJMTࣉࢠ԰

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೥+"*45ݚڀࣨͷઌഐ͕ར༻ ಛʹࣗ෼Ͱ͸৮Βͣ ೥LPTFODPOGελοϑ 3VCZ,BJHJք۾ͷਓ͕ଟ਺ ͱΓ͋͑ͣ৮ͬͯΈͨ΋ͷͷ ࢓ࣄͰ͸1FSM΍+BWBΛར༻ ೔ৗతʹ࢖͏ʹ͸ࢸΒͣ ೥3VCZ,BJHJ౰೔ελοϑ ౰೔ελοϑΛ΍͚ͬͨͩ ೥3BJMTࣉࢠ԰ 3BJMT(JSMTϚςϦΞϧΛ࣮ࢪ ౰೔͞Θͬͨ͋ͱɺ೔ৗతʹ࢖͏ʹ͸ࢸΒͣ

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ͱΓ͋͑ͣ৮ͬͯΈΔ ೔ৗతʹ࢖͏ʹࢸΒͣɺ๨Εͯ࠶ೖ໳ ࠶ೖ໳ޙɺ΍͸Γ೔ৗతʹ࢖Θͳ͍ͷͰ๨ΕΔ

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ʢӬԕͷʁʣ 3VCZॳ৺ऀ

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ͱ͍͏͜ͱΛ܁Γฦ͍ͯ͠Δ๻͕ ࠓ͔Β3VCZΛ࢝ΊΔͳΒ ಡΜͩ΄͏͕ྑ͍ͱࢥ͏ຊΛ঺հ͠·͢

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3VCZॳ৺ऀ͕ બͿ 3VCZೖ໳ॻબ TIJHFU

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લఏ

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Լهͷຊ͸ର৅֎ͱͳ͍ͬͯ·͢ ͍࣋ͬͯΔͷ͕ ୈ൛ͷͨΊ ͍࣋ͬͯͳ͍ ͍࣋ͬͯͳ͍

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3VCZॳ৺ऀ͕ બͿ 3VCZೖ໳ॻબ

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ͦͷ

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ͨͷ͍͠։ൃελʔτΞοϓ3VCZ ೥݄೔ൃച େ৔ೡࢠ؂मɼେ৔ޫҰ࿠ɼޒेཛྷ๜໌ɼᓎ Ҫୡੜஶ "൑ʗϖʔδ

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ͨͷ͍͠։ൃελʔτΞοϓ3VCZ ɾ$IBQUFSɹʮͨͷ͍͠։ൃʯΛٻΊͯ ɾ$IBQUFSɹ3VCZͷجૅ஌ࣝ ɾ$IBQUFSɹ3VCZΛ࢖ͬͯΈΑ͏ ɾ$IBQUFSɹ3VCZPO3BJMTͱ͸ ɾ$IBQUFSɹ3BJMTΛ৮ͬͯΈΑ͏ ɾ$IBQUFSɹ3VCZͷจԽ ɾ$IBQUFSɹࣗಈԽ͞Εͨςετ ɾ$IBQUFSɹΞδϟΠϧ։ൃͱ3VCZ ɾ$IBQUFSɹ3VCZͷίϛϡχςΟ ɾ$IBQUFSɹͱ͋Δاۀͷ3VCZಋೖࣄྫ ɾ$IBQUFSɹʮͨͷ͍͠։ൃʯͷ౴͑ ɾ"QQFOEJYɹ3VCZͱ3BJMTΛ΋ͬͱ஌Γ͍ͨํ΁

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ͨͷ͍͠։ൃ ɹɹ3VCZͷจԽʗΞδϟΠϧ։ൃͱ3VCZ ɹɹ3VCZͷίϛϡχςΟͱ͋Δاۀͷ3VCZಋೖࣄྫ ͪΌΜͱ3VCZ3BJMT΋ֶ΂Δ ɹɹ3VCZͷΠϯετʔϧ͔Β3BJMTΞϓϦέʔγϣϯͷ࡞੒ ςετʹؔͯ͠΋ͪΌΜͱॻ͔Ε͍ͯΔ ɹɹUFTUVOJU 34QFD $*πʔϧ 3VCZͷόʔδϣϯ͕ݹ͍ ɹɹ೥݄ൃചɹɹ

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3VCZೖ໳ॻબ ͨͷ͍͠։ൃ

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ͦͷ

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͔ΜͨΜ3VCZ ೥݄೔ൃച ͕͢ΘΒ·͞ͷΓஶ "൑ʗϖʔδ

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͔ΜͨΜ3VCZ ɾষɹ3VCZΛ࢝ΊΑ͏ ɾষɹ3VCZͷجຊΛֶ΅͏ ɾষɹม਺ ɾষɹ਺஋ͱԋࢉࢠ ɾষɹจࣈྻ ɾষɹ੍ޚߏ଄ ɾষɹ഑ྻʗϨϯδʗϋογϡ ɾষɹϝιου ɾষɹΫϥεͷجຊ ɾষɹϞδϡʔϧ ɾষɹྫ֎ॲཧ ɾষɹ૊ΈࠐΈϥΠϒϥϦ ɾষɹඪ४ఴ෇ϥΠϒϥϦ ɾষɹ૊ΈࠐΈπʔϧ ɾ"QQFOEJYɹΑΓߴ౓ͳ3VCZͷ஌ࣝ

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ಋೖํ๏͕ஸೡʹઆ໌͞Ε͍ͯΔ ɹɹ.BDΛ࢖͏৔߹ͷSCFOWͷઆ໌͕ৄ͍͠ͷ΋ྑ͍ ࠷ॳʹެࣜυΩϡϝϯτΛԡ͑͞Δ ɹɹมʹάάͬͯݟ͔ͭͬͨαΠτͰ͸ͳ͘ ɹɹެࣜυΩϡϝϯτΛݟΔบ͕͍ͭͯྑ͍ దٓϦϑΝϨϯε͕هࡌ͞Ε͍ͯΔ ɹɹ٧·ͬͨͱ͖ʹ·ͣԿΛݟΕ͹Α͍ͷ͔෼͔ͬͯྑ͍ ԋश໰୊ͱճ౴͕͍͍ͭͯΔ ɹɹ࣮ࡍʹࣗ෼ͰखΛಈ͔ͯ֬͠ೝͰ͖ͯྑ͍

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3VCZೖ໳ॻબ ͨͷ͍͠։ൃ ͔ΜͨΜ

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ͦͷ

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θϩ͔ΒΘ͔Δ3VCZ௒ೖ໳ ೥݄೔ൃച ޒेཛྷ๜໌ɼদԬߒฏஶ #൑ʗϖʔδ

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θϩ͔ΒΘ͔Δ3VCZ௒ೖ໳ ɾ$)"15&3ɹ؀ڥΛͭ͘Δ ɾ$)"15&3ɹ͔ΜͨΜͳϓϩάϥϜΛॻ͘ ɾ$)"15&3ɹॲཧͷྲྀΕΛม͑Δ ɾ$)"15&3ɹ·ͱΊͯѻ͏഑ྻ ɾ$)"15&3ɹศརͳಓ۩Λ࢖͏ ɾ$)"15&3ɹ૊Ͱѻ͏ϋογϡ ɾ$)"15&3ɹখ͘͞෼ׂ͢Δϝιου ɾ$)"15&3ɹ෦඼Λͭ͘ΔΫϥε ɾ$)"15&3ɹ෦඼Λڞಉར༻͢ΔϞδϡʔϧ ɾ$)"15&3ɹ8FCΞϓϦΛͭ͘Δ ɾ$)"15&3ɹ࢖͍͜ͳ͢

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Πϥετ͕͔Θ͍͍ʗΧϥʔ ɹɹॳ৺ऀʹͱͬͯऔͬ෇͖қ͍ɺΘ͔Γ΍͍͢ 8JOEPXTͰͷ ಋೖͷઆ໌͕ஸೡ ɹɹΧϥʔͷεΫϦʔϯγϣοτΛࢀߟʹಋೖͰ͖Δ ɹɹ74$PEF࢖ͬͯίʔυͷهࡌͱ࣮ߦ͕Ͱ͖Δ ষ8FCΞϓϦΛͭ͘Δ͕ྑ͍ ɹɹTJOBUSB/FU)551HFU VSJ +40/QBSTF SFTVMU ԋश໰୊ͱճ౴͕͍͍ͭͯΔ ɹɹ࣮ࡍʹࣗ෼ͰखΛಈ͔ͯ֬͠ೝͰ͖ͯྑ͍ Ͳ͜·Ͱ͕ίʔυ Ͳ͔͜Β࣮ߦ݁Ռ 74$PEFͷ 5FSNJOBMͰ࣮ߦ

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3VCZೖ໳ॻબ ͨͷ͍͠։ൃ ͔ΜͨΜ θϩ͔ΒΘ͔Δ

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·ͱΊ

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3VCZೖ໳ॻબ ͨͷ͍͠։ൃ ͔ΜͨΜ θϩ͔ΒΘ͔Δ

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3VCZͷೖ໳ॻΛಡΜͩ ࠓ·Ͱࡶʹ࢖͍ͬͯͨ͜ͱΛ جૅ͔Βཧղ͠ͳ͓ͤͨ ؾ͕͢Δ

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͜Ε·Ͱ

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ͱΓ͋͑ͣ৮ͬͯΈΔ ೔ৗతʹ࢖͏ʹࢸΒͣɺ๨Εͯ࠶ೖ໳ ࠶ೖ໳ޙɺ΍͸Γ೔ৗతʹ࢖Θͳ͍ͷͰ๨ΕΔ